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Figure 1
Cross sections (5 µm thick) of the zebrafish skin, 40×, scale bar 40 µm. These sections were stained with Mallory and AB/PAS. Mallory staining highlighted rounded, oval, and elongated CCs (arrows) in the intermediate layer of the epidermis with central acidophilic cytoplasm and spherical basophilic nucleus. Keratinocytes (*) are evident in the superficial stratum. The mucous cells (arrowheads) are located mainly in the superficial and medium layers, AB/PAS positive and appear purple, while CCs are AB/PAS negative, with a dark central nucleus.
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